Clam-shell bucket.



No. 779,512. PATENTED JAN.10, 1905.

. vG. H. WILLIAMS.

GLAM SHELL BUCKET.

APPLIUATION FILED MAY 19, 1904.

4 SHEETS-SHEET 2.

PATENTED JAN. 10, 1905.

G. HrWILLIAMS.

GLAM SHELL BUCKET.

APPLIOATION FILED MAY19,1904.

4 SHEETS-SHEET 3.

PATENTED JAN. 10, 1905.

G. H. WILLIAMS. GLAM SHELL BUCKET.

APPLIOATION FILED MAY 19, 1904.

l SHEETS-SHEET 4.

MM/ 0 I T V A" W a w E w W V Patented January 10, 1905.

PATENT OFFICE.

GURDON H. \VILLIAMS, OF CLEVELAND, OHIO.

CLAM-SHELL BUCKET.

SPECIFICATION forming part of Letters Patent No. 779,512, dated January10, 1905.

Application filed May 19, 1904- Serial No' 208,700-

To rtZZ whrm it may concern.-

Be it known that I, GURDoN H. IVILLIAMs, a citizen of the United States,and a resident of Cleveland. county of Ouyahoga, and State of Ohio, haveinvented anew and useful Improvement in Clam-Shell Buckets, of which thefollowing is a specification, the principle of the invention beingherein explained and the best mode in which I have contemplated applyingthat principle, so as to distinguish it from other inventions.

My invention relates to clam-shell buckets, its object being to providea bucket which shall combine economy of structure with efiiciency ofoperation.

- Said invention consists of means hereinafter fully described, andparticularly pointed out in the claims.

The annexed drawings and the following description set forth in detailcertain mechanism embodying the invention,such disclosed meansconstituting but one of various mechanical forms in which the principleof the invention may be used.

In said annexed drawings, Figure 1 represents a plan view of aclam-shell bucket embodying my invention. Figs. 2 and 3 represent endand front elevations, respectively, of such bucket. Fig. 4 represents afront elevation showing the bucket partially open, and Fig. 5 representsa similar view showing the bucket completely open.

J ournaled in the middle of a suitable frame A is a driving shaft B,upon the outer projecting ends of which are secured,respectively, twodriving-pinions 67), Fig. 1. Mounted in said frame upon opposite sidesof a vertical transverse plane containing the axis of said shaft B aretwo rocking shafts O C, respectively parallel with shaft B. Upon theprojecting ends of these rock-shafts are mounted two pairs ofoppositely-disposed oscillatory sectors O C and O C The members of eachpair of sectors mesh with each other, and one of such members is engagedby driving-pinion bfso that, as will be seen, the rotation of the pinionwill cause the members of the pairs of sectors to rock in oppositedirections. Upon each sector is pivoted a link D, Whose lower end isjournaled at the frontor inner end of the scoop member upon the oppositeside of the said central plane, as shown. Upon the rear portion of eachsector is pivoted a downwardly-depending link E, whose lower end ispivoted upon the rear or outer end of the adjacent scoop member. Suchlink is provided with an extension 6, which extends upwardly andinwardly from its point of support on the sector. Upon the inside ofeach sector and lying upon opposite sides of the corresponding extension6 are two stop-lugs 0 and 0, which limit the amount of oscillationrelatively to the sector to be subjected. hen the bucket is in itsclosed position, as shown in Fig. 3, the extension 0 rests normallyagainst the inner stop-lugs 0. Upon the shaft B are secured twopowerwheels t 5 and an opening-sheave F, by means of which the shaft Bmay be rotated in two directions, and so open or close the bucket, aswill be readily understood. Suitable guiding-pulleys a a a are securedto the top of the frame for properly guiding the opening and closingcables F, F, and F.

Operation: Assuming the bucket to be closed, as illustrated in Fig. 3,let the powerwheels 6 6 be rotated in the direction indicated by thearrow in said figure. Such action will cause the links 1) to depress theinner or front upper portions of the scoop members and "the links E tolift the rear or outer upper portions thereof. Such movement willproceed on the continuation of the rotation of the power-wheels untilthe parts assume the position shown in Fig. 4. During such time,however, it Will be seen that the links E move upon their respectivepivots, and hence move relatively to their respective sectors. Themovement thus imparted to the scoop members is such as to cause thelower inner or front edges of the members to recede from each other, andso open the bucket for the discharge of its load by means of theapplication of only a small force. The parts having assumed the positionshown in Fig. 4, practically all of the load will have been discharged.In this position it will be seen that the extensions 0 are in engagementwith the stop-lugs 0, so that during further opening movement the linksE will be fixed relatively Which the link E may.

to their respective sectors and the rear ends of the scoop memberscarried back to assume their open position, as shown in Fig. 5. Suchlatter part of the opening movement of the bucket is hence unattended byany considerable resistance due to the load contained in the scoopmembers. The opening movement is hence effected with a comparativelysmall applied force. Upon reversing the direction of rotation of thepower-wheels the bucket is closed and the sequence of theabove-described steps reversed.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any one of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention 1. In a clam-shell bucket, the combination of two scoopmembers, a pair of opposed sectors, and links connecting the front orinner ends of the scoop members with the sectors respectively, the rearor outer ends of said scoop members being also connected with saidsectors res 'iectively.

2. In a clam-shell bucket, the combination of a frame, two sectorsmounted upon said frame upon opposite sides of a given plane, two scoopmembers on opposite sides of said plane, and links connecting the inneror front ends of the said scoop members with the opposite sectorsrespectively, the outer or rear ends of said members being connectedwith the sectors on the same sides of said plane respectively.

3. In a clam-shell bucket, the combination of a frame, a pair ofoscillatory members mounted upon said frame and upon opposite sides of agiven plane, two scoop members on opposite sides of said plane, linksconnecting the one end of each scoop member with the oppositeoscillatory member respectively, and

links connecting the other end of each such scoop member with saidoscillatory member respectively.

4%. In a clam-shell bucket, the combination of a frame, a pair ofoscillatory members mounted upon said frame and upon opposite sides of agiven plane, two scoop members on opposite sides of said plane, linksconnecting the one end of each scoop member with the oppositeoscillatory member respectively, and links connecting the other end ofeach such scoop member with said oscillatory member respectively, saidlast-named links being fixed relatively to their respective oscillatorymembers throughout a part of their movement and oscillatory relativelythereto throughout another part of such movement.

5. In a clam-shell bucket, the combination of a frame, two oscillatorymembers mounted upon said frame, a scoop member, a link connecting theone end of said scoop member with one oscillatory member, and a linkconnecting the other end of said scoop member with the other oscillatorymember, the one link being fixed relatively to the oscillatory member towhich it is attached throughout a part of its movement and oscillatoryrelatively thereto throughout another part of such movement.

6. In a clam-shell bucket, the combination of a frame, two scoopmembers, and means supporting and moving said members to recede orapproach, such means including oscillatory members and linksrespectively supported by said oscillatory members and attached to saidscoop members, said links being fixed relatively to their respectiveoscillatory members through a part of their movement and movablerelatively thereto throughout another part of such movement.

Signed by me this 18th day of May, 1904.

GURDON H. WILLIAMS.

Attest:

A. E. MERKEL, Gr. IV. SAYWELL.

